Radiator



June 7, 1932.

T. E. MURRAY RADIATOR Filed Feb. 4. 1930 Patented, fl, 71932 UNITED s'rA'res PATENT ort-ica THOMAS E. MURRAY, DEOEABED, LATE OF NEW YORK, BY JOHN l. [UBB-AY,

JOSEPH B. MURRAY, AND THOMAS E. MURRAY,

JB., EXEOUIORS, ALL OF BROOKLYN,

NEW YORK, ABSIGNOBB, BY HESNE ASSIGNMENTS TO AMERICAN RADIATOR & STANDARD SANITARY CORPORATION, OOBEOBATION OF DELAWARE RADIATOR Application Med February 4, 1930. Seal No. 425,754.

In a previous Patent No. 1744,078 and certain pending a plications there are described certain ra iators of the convection type compris'ng horizontal tubes or similar 3,A narrow elongated heating elements to which is ap lied an extended area structure comose of corrugated sheets or thev like forming transverse plates or fins between which are vertical passages for heating the air and inducing a strong upward draft and circulation of the heated air throughout the room to be warmed.

In such radiators the manner of securing the extended area structure to the heating l element is important. -The contactshould be intimate and of substantial extent to secure good conductivity and should be durable under the strains set up by alternate heating and cooling," and should be as economical as possible. The present invention aims to secure these advantages.

The accompanying drawing illustrates embodiments of t e invention.

Fig. 1 is a front elevation and Fig. 2 is a plan of the central part of a radiator;

Fig. 3 is a vertical transverse section through one of the joints; Y

Fig. 4 is a similar section f a modification. The heating element is a tube 11 for steam or other heating medium extending horizontally in two sections in vertical alignment with each other. It is preferably of copper.

The radiator may be used for cooling the air by circulating cold brine, for example, through the tube, in which case the air circulation would be downward.

Applied to opposite sides of the tube are corrugated sheets forming inner longitudinal plates 12, outer longitudinal plates 13 and transverse 4plates or ins 14. The inner lates 12 are bent outward to form recesse portions 15 which embrace the tube so as to4 provide a considerable contact area.

The opposite plates 12 are spaced apart slightly,` which facilitates the drawing of the recessed portions laterally into close contact with the tube; but said lates may be drawn together above and be ow the tubes to contact with the latter around practically 60 their entire circumference.

Immediately above and below each tube' the plates 12 are apertured to ermit the passage of the fastening devices. hese comprise straps 16 of comparatively still steel which fit and bear against the recessed portions 15 of the sheet at one side of the tube and which have transversely extending portions 17 which pass through the openings in the plates 12 and have their free ends bent up against `the sheet at the corres ondiiig side so as to fasten the parts toget er.

The screw 19 passes through the curved portion of the trap 16 and bears against the recessed portion 15 of the pla-te. This serves to clamp the ends 17 against the plate 12 and to tighten the connection between the opposite plates.

The screw may be omitted. Fig. 4 shows such a construction. In this case the parts must be clamped closely together before or while the ends 18 are being clinched, so that this clinching operation will ensure a tight connection and an intimate contact of the sheet metal against theatube.

For some installations it is sufficient to have a corrugated sheet at one side only using a straight at sheet for a series of plates 12, or other style of anchorage against which to clinch the ends of the straps. Or it is ossible to omit one of the sheets, say the right-hand one in Figs.` 3 and 4, allowing the clip 16 to engage the tube directly on that side, its ends being clinched as shown in the sheet located at the opposite side.

Radiators of generally similar design have been built also with separate transverse plates or ins like 14 but -free at their outer edges and with ianges like the plates 12 en aging the heating element. The method of astening above described ma. be applied to the flanges of such separate ns as well as to the plates 12 forming parts of the continuous corru ated sheets illustrated.

e points of attachment are outside of or beyond the tubes, but it is advantageous to brinfr them close to the tubes in order to hold the sxheets in close contact and to prevent such lyielding of the sheets when the tubes are cated as would occur if the fastenings were remote from the tubes.

The fastening means described may be supplemented in various ways as, for examp e, y soldering, brazing or similar operation, either using a film of solder between the tube and the engaging portions of the sheets or dip ing the assembled radiator so that the soldier is applied only around the edges of the contact areas.

lfVhen the radiator is used for cooling air or for analogous interchanging of heat, the tube is still referred to herein as the heating element, though it may be, in fact, transmltting heat to the fluid which circulates within it, instead of in the opposite direction as in the ordinary radiator for heating the air in a room.

The opposite corrugated sheets ma be brought closer together than they are illustrated and'may, in fact, be brou ht substantially into contact so as to close t 1e space between them, making a more compact radiator and securing a larger contact area between the sheets and the tubes.

The use of straps for holding the sheets closely against the tubes is not claimed broadly in the present application, bein covered in another application co-pending erewith.

Various other modifications may be made by those skilled in the art without de arting from the invention as defined in the fo lowing claims.

l. radiator including a tubular heating element, an extended area structure comprising recessed portions embracing the heating element, recessed straps fittin the outside of said recessed portions at one slde of the heating element and connected to the extended area structure at the op site side at oints above and belowthe heating element to asten the parts together.

2. A radiator. including a heating element, an extended area structure comprising recessed portions embracing the heati element. straps fitting the outside of said recessed portions at one side of the heating element and passing through the extended area structure at the opposite side and bent over against the same to fasten the parts together.

Ii. A radiator including a tubular heating clement, an extended area structure comprising recessed portions embracing the vheating element, recessed straps fitting the outside of said recessed portions at one side of the heating element and connected to the extended area lstructure at the opposite side at points above and below the heating element to fasten the parts together and means for tightening the connection.

4. A radiator including a heating element, an extended area structure comprising recessed portions embracing the heating element, straps tting the outside of said recessed portions at one side of the heating element and passing through the extended area structure at the opposite side and bent over against the same to fasten the arts together and screws for clamping the nt-over portions in fastenin position. i

5. A radiator mcluding a heating elemen, an extended area structure comprising r cessed portions embracing the heating element and fastening devices passing from the structure on one side through the structure on the opposite side and bent over into engagement with the latter at onts closely above and below the heating e ement.

6. A radiator including a heating element, an extended area structure in parts at oppo site sides respectively of said heating element and a strap passing through one of said parts and connected to the other to hold them in close engagement with the heating element.

7. A radiator including a heating element, an extended area structure a ortion of which is in engagement with said eating element and a strap bearing against said engaging portion and connected directl to an opposite part of the structure to ho d portion closely against the heating element.

8. A radiator including a heating element and extended area structure comprising a. corrugated sheet the inner portions of which are in engagement with said heating element and straps bearing against the inner portions of the sheet and connected directl to the structure at the opposite side for hol ing such inner portions of the sheet closely against the heating element.

In witness whereof, we have hereunto signed our names this 24th day of F ebruary,

JOHN F. MURRAY, JOSEPH B. MURRAY, THOMAS E. MURRAY, JR. ,Eecutors for the Estate of Thomas E'.

Murray,` Deceased.

said engaging 

